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Abstract
Contactless suspensions of particles, droplets, or bubbles by electric and magnetic fields are used for solid-liquid, solid-solid, liquid-liquid, and gas-liquid separations. Dielectric levitation and magnetohydrostatic separation techniques are two examples. The theoretical relationship existing between these techniques and the methods employed for free levitation of solid objects in vacuum and in midair are examined. Practical systems related to the latter methods as well as systems associated with magnetic and electric separation methods are reviewed.
